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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

← All of v2.1.239 Home All releases ←olderv2.1.238 v2.1.240newer→
Claude Code v2.1.239

Hosted meta-connector for cloud runs, gated off

Not switched on
Useful1 Signal3
MCP

Cloud runs could attach an extra hosted connector, but the flag falls back to off.

An extra hosted connector built from a discovered MCP server is attached only if a server flag turns it on.

Feature flag
tengu_cobalt_plinth_yew Off in both readings

The flag server returned off for the account this site reads and for the anonymous baseline. A reading of off cannot rule out a rollout these two readings sit outside of.

This account: off · anonymous baseline: off · compiled default in v2.1.239: on

Read once, for one account on one subscription tier, against v2.1.239. It isn't a statement about your account. What a flag value here can and cannot tell you

What

A new flag, tengu_cobalt_plinth_yew, attaches an extra hosted connector (a server plus a tool name prefix) built from a discovered MCP server in cloud-hosted runs. It falls back to off, so nothing attaches unless a server value turns it on.

Details
  • Only applies to runs where CLAUDE_CODE_REMOTE is set.
Evidence

tengu_cobalt_plinth_yew

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.239 →